03. Fold and Sum

import java.util.Scanner;
import java.util.Arrays;

class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int[] arr = Arrays
                .stream(scanner.nextLine().split(" "))
                .mapToInt(Integer::parseInt)
                .toArray();

        int[] sumArr = new int[arr.length / 2];

        for (int j = 0; j < arr.length / 4; j++) {
            sumArr[j] = arr[arr.length / 4 - (1 + j)] + arr[arr.length / 4 + j];
            sumArr[sumArr.length / 2 + j] = arr[arr.length / 2 + j] + arr[arr.length - (1 + j)];
        }

        for (int element : sumArr) {
            System.out.printf("%d ", element);
        }
    }
}